# Questions Asked in January 2011

## Most Popular Questions of January 2011

1. ### english

Which words/phrase in this sentence is misplaced? Having been discovered, Rover looked up at his owner with puppy-dog eyes. a. with puppy-dog eyes b. been discovered c. his owner d. rover looked up I am torn between (a.) and (c.). Since the answer (c.)

asked by Karen on January 28, 2011
2. ### physics

During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip?

asked by thaokieu on January 30, 2011
3. ### chemistry

What is H+(aq) + –OH(aq) H2O(l)

asked by cathy on January 15, 2011
4. ### desity

A fish tank holds 35 {\rm gal} of water. Using the density of 1.0 {\rm g/mL} for water, determine the number of pounds of water in the fish tank

asked by Anonymous on January 28, 2011
5. ### Cochise College

how many kilojoules are required to raise the temperature of a 150. g sample of silver from 25 °C to 135 °C? Silver has a specific heat of 0.235 J/g °C.

asked by Emi on January 28, 2011
6. ### physics

a constant force can at on an object for diferrent lengths of time. as the length of time the force acts increases, the impulse imparted to the object increases decreases remians the same

asked by john on January 5, 2011
7. ### Calculus

log3 x-log3(1-x)=3

asked by Zukii on January 17, 2011
8. ### math

which is the solution for x in terms of the variables in the equation x/y -z = rw a)x=y (z+rw) b)x=z/y (rw) c)x=rw+yz d)x=y+1/2(ryz)

asked by Anonymous on January 18, 2011
9. ### Calculus

If a ball is thrown in the air with a velocity 44 ft/s, its height in feet t seconds later is given by y = 44t - 16t2. (Round your answers to one decimal place.) (a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.

asked by Ethan on January 17, 2011
10. ### Chemistry

Rank the following fertilizers in decreasing order of mass percentage of nitrogen: NH3 NH4NO3 (NH4)2HPO4 KNO3 (NH4)H2PO4 (NH4)2SO4

asked by Anonymous on January 16, 2011
11. ### math

Julia has 32 sheets of paper remaining in her 200 page note book. What percentage of the paper has she used?

asked by Anonymous on January 18, 2011

P2-1A Frontier Park was started on April 1 by C. J. Mendez and associates. The following selected events and transactions occurred during April. Apr. 1 Stockholders invested $40,000 cash in the business in exchange for common stock. 4 Purchased land asked by Jaycee on January 15, 2011 13. ### Geometry The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon? asked by Anal-G on January 20, 2011 14. ### math Lana has$60. She spends 80% of the money. She invests the remaining amount and earns a profit of 80%. How much money does she now have?

asked by Anonymous on January 18, 2011
15. ### Chemistry e

The rusting of iron is represented by the equation 4Fe +3O2 --> 2Fe2O3. If you have a 1.50-mol sample of iron, how many moles of Fe2O3 will there be after the iron has rusted completely? a. 0.50 mol b. 0.75 mol c. 1.0 mol d. 1.50 mol e. 2.0 mol --> I got

asked by Kaye on January 18, 2011
16. ### math

What is the correct simplification of the equation 6x-4y-3x+y

asked by Anonymous on January 18, 2011
17. ### Chemistry

Many power plants produce energy by burning carbon-based fuels, which also produces CO2. CO2 is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2 (g)

asked by Harold on January 27, 2011
18. ### math

if the pediatric floor of a hospital has 165 beds, how many rooms are there if each room hold 3 beds?

asked by Anonymous on January 18, 2011
19. ### physics

The components of vector A are Ax and Ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Find the angle θ if the components of the displacement vector A are (a) Ax = 11 m and Ay = 11 m, (b) Ax = 19 m and Ay = 11 m,

asked by thaokieu on January 30, 2011
20. ### Literature

What are some of the poetic devices used in this poem by Gladys Cardiff? -diction -end-stopped -lyric -symbol -syntax Bending, I bow my head And lay my hand upon Her hair, combing, and think How women do this for Each other. My daughter's hair Curls

asked by Sarah on January 12, 2011
21. ### chemistry

A sample of propane(c3h8)has 3.84x10^24 H atoms. a) how many carbon atoms does the sample contain? b) what is the total mass of the sample?

asked by Jessica on January 15, 2011
22. ### physics

three point charges are placed at the following points on the x-axis: +2µC at x=0, -3µC at x=40 cm, -5µC at x=120 cm. Find the force (a) on the -3µC charge (b)on the -5µC charge.

asked by Joanna Luz on January 24, 2011
23. ### statistic

roll 2 standard dice and add the numbers. what is the probability of getting a number larger than 9 for the first time on the third roll?

asked by linn on January 15, 2011

Pat deposits $600.00 in a saving accounts at a simple interest rate of 6% per year for five years. How much money will pat have earned in interest at the end of five years? asked by Anonymous on January 18, 2011 25. ### Physics An 800N billboard worker stands on a 4m scaffold weighing 500N and supported by vertical ropes at each end. How far would the worker stand from one of the supporting ropes to produce a tension of 550N in that rope? asked by Anonymous on January 2, 2011 26. ### physics 1 kg of ice at 0° C is mixed with 9 kg of water at 50° C (The latent heat of ice is 3.34x105 J/kg and the specific heat capacity of water is 4160 J/kg). What is the resulting temperature? asked by calous --- HELP PLEASEE!!! on January 23, 2011 27. ### physics, dynamics Car A starts from rest at t = 0 and travels along a straight road with a constant acceleration of 2 m/s2 until it reaches a speed of 27 m/s. Afterwards it maintains this speed. Also, when t = 0, car B located 2000 m down the road is traveling towards A at asked by siti on January 13, 2011 28. ### ALLIED HEALTH The main purpose of a peer review committee is to A. identify activities that suggest guidelines aren’t being followed. B. establish procedures for confidentiality of incident reports. C. examine the work habits of individual employees who have access to asked by COLLINS on January 22, 2011 29. ### physics The drawing shows a uniform electric field that points in the negative y direction; the magnitude of the field is 4540 N/C. Determine the electric potential difference the following points VB − VA between points A and B VC − VB between points B and C asked by Anonymous on January 15, 2011 30. ### maths/ physics Determine the two square roots of 3+j4 in both a)Cartesian form b) Polar form Any help with this question would appreciated asked by jon smith on January 3, 2011 31. ### statistics What percent of the observations in a distribution lie between the first quartile and the third quartile? A. 75%. B. 50%. C. 25%. D. None of the above. asked by Anonymous on January 11, 2011 32. ### Physics As a train accelerates from a station, it reaches a speed of 4.7m/s in 5.0s. If a train acceleration remains constant what is its speed after an additional 6.0s has elapsed? asked by Lesh on January 21, 2011 33. ### math If lessa is paid$2,3500.00 monthly and has $468.00 withheld from each monthly paycheck, what is her annual net salary? asked by Anonymous on January 18, 2011 34. ### chemistry Is this a buffer system? NH3/(NH4)2SO4? It is formed by mixing NH3 (weak base) and a strong acid (H2SO4), but according to my worksheet it is not a buffer system. Why is this so? Isnt it a buffer as long as it consists of a weak base and its salt of a asked by seth on January 13, 2011 35. ### Physics A man using a 70 kg garden roller on a level surface exerts a force 20 kgf at 45 degrees to the ground . Find the vertical force of the roller on the ground if he ; a) pulls the roller. b) pushes the roller. asked by Joseph on January 10, 2011 36. ### Physics When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic energy, the potential energy of the car decreases. Where does this energy go? Where does most of it appear in a hybrid vehicle? asked by Sarah on January 2, 2011 37. ### physics A point charge with charge q1 is held stationary at the origin. A second point charge with charge moves from the point (x1,0) to the point (x2,y2). How much work is done by the electrostatic force on the moving point charge? Express your answer in joules. asked by Cassie on January 24, 2011 38. ### chemistry while hiking near the mouth of the river, malcolm finds a fine grained that break into flat pieces. This an example of what type of rock? a)magna b)igneous c)matamorphic d)sedimentary asked by Anonymous on January 20, 2011 39. ### electromagnatic a) Find the force on a straight conductor of length 0.30m carrying a current of 5.0A in the direction, where the field is T. i. b) A conductor of length 2.5m located at z=0, x=4m carries a current of 12.0A in direction. Find the uniform in the region if asked by fati on January 8, 2011 40. ### physics A stationary 1.67 kg object is struck by a stick. The object experiences a horizontal force given b F = at-bt^2, where t is the time in milliseconds from the instant the stick first contacts the object. If a = 1500 N/ms and b = 20N/ms^3, what is the speed asked by sandhu on January 27, 2011 41. ### Algebra find the measure of an angle whose supplement measures two times its measure asked by Help on January 22, 2011 42. ### physics a ladder AP of length 5m inclined to a vertical wall is slipping over a horizontal surface with velocity 2m/s , when A is at a distance 3m from ground . what is the velocity of centre of mass at this moment? asked by jerf on January 16, 2011 43. ### chemistry When a volume of H2 reacts with an equal volume of Cl2 (assume you have 1 L of each) at the same temperature and pressure, what volume of product having the formula HCl is formed? Question 4 answers asked by Anonymous on January 10, 2011 44. ### physics a ball is thrown at an initial angle of 37 and initail velocity of 23.0 m/s reaches a maximum height h, as shwon in the Figure. With what initial speed must a ball be thrown straight up to reach the same maximum height h? asked by Anonymous on January 3, 2011 45. ### Chemistry Calculate the pressure that ccl4 will exert at 40 of 1.00 mol occupies 28.0 L, assuming that (a) CCl4 obeys the ideal-gas equation (b) CCl4 obeys the Van der Waals equation. (a) PV = nRT P = nRT / V (b) (P + n^2a/V^2)(V - nb) = nRT CCl4 = a = 20.4 asked by Anonymous on January 9, 2011 46. ### financial analysis an item which may be converted to cash within one year or one operating cycle of the firm is classified as a asked by james on January 23, 2011 47. ### physics Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.35 L, 2.6 g/cm3; 0.25 L, 1.0 g/cm3; and 0.40 L, 0.60 g/cm3. What is the force on the bottom of the container due to these liquids? One asked by rock on January 28, 2011 48. ### physics A ventilation fan has blades 0.25 m in radius rotating at 20rpm. What is the tangential speed of each blade tip? i don't understand how to do tangential speed. asked by Ann on January 11, 2011 49. ### math A new physician saw 841 clients during the first five years of practice and 1072 the second. What percent volume increase asked by Anonymous on January 18, 2011 50. ### Math Please help me with this If 2/3 of N is 4, then 1/2 of N is: asked by Becki on January 17, 2011 51. ### physics A model rocket leaves the ground, heading straight up at 47 m/s. (a) What is its maximum altitude? m What are its speed and altitude at each of the following times? (b) 1 s m/s m (c) 4 s m/s m (d) 8 s m/s m asked by Jen on January 16, 2011 52. ### physics A man leans over the edge of a cliff and throws a rock upward at 4.9 m/s. Neglecting air resistance, two seconds later the rock's speed is what? asked by susan on January 30, 2011 53. ### Cylinder Height A cylinder has surface area of 402 cm2. The height is three times greater than the radius. What is the height of the cylinder? asked by Sydney on January 19, 2011 54. ### Help Please! Charges of −4q are fixed to diagonally opposite corners of a square. A charge of + 5q is fixed to one of the remaining corners, and a charge of + 3q is fixed to the last corner. Assuming that ten electric field lines emerge from the + 5q charge, sketch asked by Brian on January 24, 2011 55. ### Chem A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant asked by Shrell on January 19, 2011 56. ### chemistry Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of asked by Deanne on January 9, 2011 57. ### physics a ferry boat is sailing at 12 km/h 30 degrees west of north with respect to a river that is flowing at 6 km/h. in what direction, as observe from the shore, is the ferry boat is sailing? asked by Anonymous on January 30, 2011 58. ### calculus find the volume formed by revolving the parabola y=4-x^2 in the first quadrant: a.) about x=0 b.) about x=2 asked by nicko on January 3, 2011 59. ### Geometry 1. MO bisects LMN, LMN = 5x-23, LMO = x+32. Find NMO. >>I got the answer 45.75 but I got it wrong. I do not know how to solve this question and I have tried all that I know. Please help.. asked by Needs Help on January 24, 2011 60. ### math What is the correct restatement of 32%? asked by Anonymous on January 18, 2011 61. ### science In a certain plant, smooth edge leaves(S) are dominant over roughed edge leaves (s)Two plants heterozygous for smooth edges are crossed. What proportion of the offspring are expected to be heterozygous for smooth edges leaves a)1/4 b)1/2 c)3/4 d 1 asked by Anonymous on January 18, 2011 62. ### PHYSICS A person whose weight is W=584 N doing push-ups. Find the normal force exerted by the floor on each hand each foot, assuming that the persons holds this person |=central gravity foot arm -------|-------- .840m .410m asked by EHm on January 10, 2011 63. ### physics A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it asked by kevin on January 17, 2011 64. ### physics The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation asked by thaokieu on January 30, 2011 65. ### Physics Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges? asked by Pablo on January 16, 2011 66. ### Physics Two people are carrying a uniform 788.0 N log through the forest. Bubba is 2.0 m from one end of the log (x), and his partner is 1.1 m from the other end (y). The log is 6.2 m long (z). What weight is Bubba supporting? asked by Joan on January 16, 2011 67. ### Algebra Find the equation of the quadratic function f whose graph is shown below. Ponts on the graph are (-3,-1)(-2,-4) f(x)= asked by Rachal on January 25, 2011 68. ### physics High-performance race cars can accelerate from 0 m/s to 27 m/s (60 mi/h) in about 4 s. To see how large the acceleration due to gravity is, determine the time required for an object dropped from rest to attain a speed of 27 m/s. Ignore air resistance. asked by thaokieu on January 30, 2011 69. ### physics a student standing on the roof of a 50 meter high building kicks a stone at a horizontal speed of 4 meters per second, how much time is required for the stone to reach the level ground below? asked by jack on January 16, 2011 70. ### Geography & World Cultures Find a formal factor that connects Egypt to Africa, to Europe, and to Southwest Asia ? asked by Katiee on January 6, 2011 71. ### math A charity carnival requires three volunteer workers for each booth. If the carnival has 29 booths. How many volunteers must be recruited? asked by Anonymous on January 18, 2011 72. ### Chemistry A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20°C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20°C). The bottle is brought outside and stored at 0.0°C. (See asked by Ashley on January 26, 2011 73. ### Electr. and Magnetism 1) A charge of 80nC is uniformly distributed along the x-axis from x= 0 to x= 2.0m. Determine the magnitude of the electric field at a point on the x-axis with x=8.0m. a] 30 N/C b] 15 N/C c] 48 N/C d] 90 N/C e] 60 N/C 2) 3 point charges, 2 positive and one asked by Allan on January 31, 2011 74. ### Business What factors account for the resurgence of interest in Operation and Supply Chain Management (OSCM) today? asked by Jaison on January 31, 2011 75. ### algebra WHY ISN'T SOMEONE HELPING ME WITH THIS QUESTION?? you receive a$25 gift card card to a sporting goods store for your birthday. you are looking at skateboards and want to spend no more than \$85 of your own money. a. write and solve an inequality to find

asked by blue13 on January 5, 2011
76. ### geometry

an angle is equal to one-third its complement what is the angle?

asked by dina on January 25, 2011
77. ### Chemistry

what is the total number of moles in 80.0 grams of C2H5Cl (gram-formula mass=64.5grams/mole)? (1)0.806 (2)1.24 (3)2.48 (4)5.16 i appreciate any help.

asked by Jason on January 3, 2011
78. ### chemistry

Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80.

asked by rena on January 16, 2011
79. ### algebra

A basket contains 11 pieces of fruit: 4 apples, 5 oranges, and 2 bananas. Jonas takes a piece of fruit at random from the basket, and then Beth takes a piece at random. What is the probability that Jonas will get an orange and Beth will get an apple?

asked by den on January 20, 2011
80. ### Calc

The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours. a) Find the initial population. b) Write an exponential growth model for the

asked by Erica on January 6, 2011

VWXYZ is a rectangle-based pyramid where WX=66 cm and XY=32cm. The vertex is vertically above the center of the base. Given that the slant heights VA and VB are 56 cm and 63 cm respectively, find the total surface area of the pyramid. Additionally, find

asked by Helen on January 23, 2011
82. ### Trigonometry

A carnival Ferris wheel with a radius of 7 m makes one complete revolution every 16 seconds. The bottom of the wheel is 1.5 m above the ground. The ride starts at the bottom. Find the sinusoidal function that models this Ferris wheel in terms of time (t)

asked by Tabitha on January 14, 2011
83. ### Chemistry

given the balanced equation representing a reaction: 4NH3+5O2-->4NO+6H2O what is the minimum number of moles of O2 that are needed to completely react with 16 moles of NH3? (1)16 mol (2)20.mol (3)64 mol (4)80. mol i think its 2 but im not sure.

asked by Destinee on January 2, 2011
84. ### math

find the sum and product of the roots of the equation 5x^2+11x-3=0 ?

asked by luis on January 18, 2011
85. ### AP PHYSICS MECH.

A simple pendulum, consists of an object suspended by a string. The object is assumed to be a particle. The string, with its top end fixed, has negligible mass and does not stretch. In the absence of air friction, the system oscillates by swinging back and

asked by vm on January 6, 2011
86. ### Trig

The diameter of the wheels on your car (including the tires) is 25 inches. You are going to drive 305 miles today. Each of your wheels is going to turn by an angle of how many degrees.

asked by Anonymous on January 27, 2011

a jar contains 4 white chips, 5 purple chips and 1 black chip. chips are selected randomly one at at time and are not replaced. What is the probability of choosing a purple then black chip?

asked by Kaelin on January 23, 2011
88. ### Chemistry

Explain, in terms of electronegativity, why an H-F bond is expected to be more polar than an H-I bond.

asked by Dee on January 4, 2011
89. ### AP Calculus

The radius of a circle is decreasing at a constant rate of 0.1 centimeters per second. In terms of the circumference C, what is the rate of the area of the circle, in square centimeters per second? a. -(0.2)pie C b. -(0.1)C c. -(0.1)C/2 pie d. (0.1)^2C e.

asked by Naz on January 18, 2011
90. ### Science-Physics

You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of .50 m/s? (b) How much work do you do if you push the box for 35 s?

asked by Erica on January 9, 2011
91. ### Geometry

Find the area of the following ellipse (round to nearest tenth). 2a = 10 cm; 2b = 24 cm. a = How many cm2?

asked by Ivan on January 16, 2011
92. ### math

What number is the solution to the equation -9(k-17) =-54 a)-26 b)23 c)28 d)37

asked by Anonymous on January 20, 2011
93. ### math

What might you have if you don't feel well?

asked by lolololol on January 15, 2011
94. ### MATH

The Megabuck Hospital Corp. is to build a state-subsidized nursing home catering to homeless patients as well as high-income patients. State regulations require that every subsidized nursing home must house a minimum of 770 homeless patients and no more

asked by LIZ on January 28, 2011
95. ### STUDY UNIT: MAIN IDEAS

Both Greta and Fred were on the bus that arrived in Pittsburgh. Fred was glad to be home. He looked forward to visiting with old friends. Greta, on the other hand, dreaded seeing her old boyfriend. She already missed her days in New York City. 2. What can

asked by shamso on January 27, 2011
96. ### english

only five days later, the child itch rash had almost completely disappeared which word is the simple subject in the sentence above? a) five b) days c) Childs d) rash

asked by Anonymous on January 26, 2011

A woman with normal color vision has a colorblind daughter. What are the genotypes and phenotypes of BOTH parents?

asked by SkaterGirl on January 5, 2011
98. ### math

what number gives the same result when multiplied by 6 as it does when 6 is added to it?

asked by Joseph on January 25, 2011
99. ### Physics

Mars has a radius of about 0.53 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.

asked by josh on January 31, 2011
100. ### physics

a ladder AP of length 5m inclined to a vertical wall is slipping over a horizontal surface with velocity 2m/s , when A is at a distance 3m from ground . what is the velocity of centre of mass at this moment?

asked by sreeram on January 16, 2011